shell:$ nslookup -timeout=2 -retry=1 'login.sendgrid.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	login.sendgrid.com
Address: 18.160.213.5
Name:	login.sendgrid.com
Address: 18.160.213.96
Name:	login.sendgrid.com
Address: 18.160.213.62
Name:	login.sendgrid.com
Address: 18.160.213.68